Water cycle

The water cycle refers to the continuous exchange of water within the hydrosphere, among the atmosphere, soil water, outside water, earth water, and plants. Water chains moves perpetually through each of these regions in the water chain consisting of following transmit processes:
• Evaporation from oceans and other water bodies into the air and transpiration from land plants and animals into air.
• Precipitation, from water vapor condensing from the air and falling to earth or ocean.
• Runoff from the earth usually reaching the sea.

Most water vapor over the oceans returns to the oceans, but winds carry water vapor over land at the same rate as runoff into the sea, about 36 Tt per year. Over land, evaporation and transpiration contribute another 71 Tt per year. Rainfall, at a rate of 107 Tt per year over land, has several forms: most commonly rain, snow, and hail, with various offerings from fog and dew. Condensed water in the air may also refract sunshine to produce rainbows.

Bottled water

Bottled water is drinking water packaged in bottles for individual consumption and retail sale. The water can be glacial water, spring water, and purified water. Many countries, mainly developed countries, regulate the quality of bottled water through government standards, typically used to make sure that water quality is safe and labels accurately reflect bottle contents. In many developing countries, however, such standards are variable and are often less stringent than those of developed nations.

Supporters of bottled water view the product not just as an option for municipal water, but as a healthy choice instead of soft drinks or sport drinks that can be purchased in restaurants, convenience stores or vending machines.

Negative calorie food

Calorie restriction, or caloric control, is a dietetic rule reflection to improve health and slow the aging process by limiting dietary energy intake. Calorie restriction is a common measure found in several dietary regimens, including the Okinawa diet and the CRON-diet. Negative calorie food. The phrase negative calorie food is a word used by people who consider that there are positive foods which require more energy to digest than they provide nutritionally. Low nutrient, high cellulose foods such as celery are generally agreed to require very slightly more energy to digest than they provide nutritionally. These foods may be consumed within a weight-loss diet to potentially relieve the feeling of desire without contributing to total caloric intake. However, limiting a diet to only these foods would result in malnutrition.

Siddha medicine uses a number of "negative calorie" medical extracts. Although the correct composition of these medicines is unknown, they are believed to hold complex proteins such as snake venom. There is no scientific evidence on the effectiveness of these medicines.